diff --git a/install-xash3d.sh b/install-xash3d.sh
index 6d1502e..9a69cca 100755
--- a/install-xash3d.sh
+++ b/install-xash3d.sh
@@ -153,7 +153,7 @@ case $1 in
           ;;
           
           0.20)
-            WAF_OPTIONS="--enable-stb --enable-utils --enable-tests --enable-lto"
+            WAF_OPTIONS="--enable-stb --enable-utils --enable-tests --enable-lto --enable-openmp"
           ;;
         esac